CN102628979B - Zoom type lens barrel and image pickup apparatus - Google Patents
Zoom type lens barrel and image pickup apparatus Download PDFInfo
- Publication number
- CN102628979B CN102628979B CN201210025772.1A CN201210025772A CN102628979B CN 102628979 B CN102628979 B CN 102628979B CN 201210025772 A CN201210025772 A CN 201210025772A CN 102628979 B CN102628979 B CN 102628979B
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- CN
- China
- Prior art keywords
- lens unit
- lens
- unit
- directly
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0046—Movement of one or more optical elements for zooming
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a zoom type lens barrel and an image pickup apparatus. The lens barrel which can increase the relative movement interval of lens units in the direction of an optical axis without increasing the dimension of a translating cylinder, which inhibits the rotation of the lens units, in the direction of the optical axis. The movement of a second lens unit holding second group lenses is switched from linear guide by a first translating guide unit to linear guide by a second translating guide unit when the second lens unit moves in a direction relatively away from a first lens unit holding first group lenses.
Description
Technical field
The present invention relates to be installed in the lens barrel (lens barrel) such as the zoom type of the picture pick-up devices such as digital camera (image pickup apparatus), and relate to the picture pick-up device with this lens barrel.
Background technology
Traditionally, in the lens barrel being installed on such as the zoom type of the picture pick-up devices such as digital camera, keep multiple lens units of lens to move on optical axis direction by the rotation of cam canister, simultaneously by directly entering the movement of cylinder restriction lens unit in rotation direction.
In recent years, along with taking the requirement of multiplying power increase, the number of lens unit has increased and the total length of stretching out of lens unit also increases, is tending towards thus making lens barrel to maximize.On the other hand, require digital camera slimming, therefore require to reduce most possibly lens barrel size on optical axis direction in the time retracting.
Therefore, for example, following a kind of lens barrel has been proposed, wherein, inner circumferential side and outer circumferential side at a cam canister arrange cam path, and multiple lens units of following respective cams groove relatively move to change and take multiplying power (seeing TOHKEMY 2006-078537 communique) on optical axis direction.In addition, following a kind of lens barrel has been proposed, wherein, front group of lens unit and rear group of lens unit engage and are held in respective cams groove (seeing TOHKEMY 2006-078537 communique) in the mode of three sections with the respective cams grooved cam that is formed at cam member.
In addition, a kind of following method has been proposed, pass through the method, front and rear on the optical axis direction of lens unit arrange driven member, and driven member is mobile to guarantee the shift motion (seeing TOHKEMY 2007-114531 communique) of lens unit on same cam canister along with the movement of zoom lens.
In addition, according to TOHKEMY 2006-078537 communique and TOHKEMY 2007-114531 communique, if for increase take multiplying power and make lens unit on optical axis direction relatively move interval increase, limit lens unit rotation directly enter cylinder optical axis direction on size will increase.As a result, lens barrel size on optical axis direction in the time retracting will increase, and this has hindered the slimming of picture pick-up device.
CN101620310A is and the immediate prior art of the application.
Summary of the invention
The invention provides following a kind of lens barrel, this lens barrel can increase the relatively move interval of lens unit on optical axis direction, and do not increase the size on the optical axis direction that directly enters cylinder of rotation of restriction lens unit, and the invention provides a kind of picture pick-up device with this lens barrel.
Therefore, a first aspect of the present invention provides a kind of lens barrel, and this lens barrel comprises: first lens unit, and it is constructed to keep first group of lens; The second lens unit, it is constructed to keep second group of lens; The first cam member, described first lens unit and described the first cam member cam engagement, and described the first cam member is constructed to rotate so that described first lens unit moves on optical axis direction; The second cam member, described the second lens unit and described the second cam member cam engagement, and described the second cam member is constructed to rotate so that described the second lens unit moves on optical axis direction; Directly enter cylinder, it is constructed to limit the rotation of described first lens unit; First directly enters guidance unit, it is constructed to be arranged between described first lens unit and described the second lens unit, and described first directly enters guidance unit and be constructed under the confined state of rotation of described the second lens unit, directly enter to guide on optical axis direction described the second lens unit; With second directly enter guidance unit, it is constructed to be arranged on described the second lens unit and describedly directly enters between cylinder, and described second directly enters guidance unit is constructed under the confined state of rotation of described the second lens unit, directly enter to guide on optical axis direction described the second lens unit, wherein, when described the second lens unit with described first lens unit relatively away from side while moving up, the movement of described the second lens unit is directly entered guiding and is switched to directly to be entered guidance unit by described second and directly enter guiding from directly being entered guidance unit by described first.
Therefore, a second aspect of the present invention provides a kind of picture pick-up device, and this picture pick-up device has by move the lens barrel that changes the zoom type of taking multiplying power on optical axis direction between camera site and retracted position, and the lens barrel of described zoom type is above-described lens barrel.
According to the present invention, can increase lens unit on optical axis direction relatively move interval and do not increase restriction lens unit rotation directly enter cylinder optical axis direction on size.Therefore, the shooting multiplying power of lens barrel can be increased, the slimming of picture pick-up device can be realized by reducing lens barrel size on optical axis direction in the time retracting simultaneously.
According to the description to illustrative embodiments below (with reference to accompanying drawing), it is obvious that further feature of the present invention will become.
Brief description of the drawings
Fig. 1 be illustrate as according to the digital camera of exemplary picture pick-up device of the present invention from front observe stereoscopic figure.
Fig. 2 is the stereographic map of observing from the back side that the digital camera in Fig. 1 is shown.
Fig. 3 is the block diagram that the control system of digital camera is described.
Fig. 4 illustrates the sectional view of lens barrel in wide-angle position.
Fig. 5 illustrates the sectional view of lens barrel in the position of dolly-out,ing dolly-back.
Fig. 6 illustrates that first lens unit, the second lens unit and first directly enter the exploded perspective view of the relation between cylinder.
Embodiment
Describe the present invention in detail referring now to the accompanying drawing that shows embodiments of the present invention.
Fig. 1 be illustrate as according to the digital camera of exemplary picture pick-up device of the present invention from front observe stereoscopic figure.Fig. 2 is the stereographic map of observing from the back side that the digital camera in Fig. 1 is shown.
With reference to figure 1 and Fig. 2, be constructed such that according to the digital camera 15 of present embodiment view finder 20, secondary light source 19, flashlamp 21 and lens barrel 30 for photometry and range finding are disposed in front.Lens barrel 30 is the lens barrel of zoom type, and it by moving and change shooting multiplying power on optical axis direction between camera site and retracted position.
Button release 16, power switch button 18 and Zoom switch 17 are disposed in the end face of digital camera 15.As shown in Figure 2, operating knob 24 to 29, such as the displays such as LCD 23 and view finder eyepiece (finder eyepiece) 22 are disposed in the back side of digital camera 15.
Fig. 3 is the block diagram that the control system of digital camera 15 is described.As shown in Figure 3, CPU46, ROM45, RAM47, button release 16, operating knob 24 to 29 and display 23 are connected to bus 44.In addition, power switch button 18, Zoom switch 17, storer 40, compression/decompression unit 41, Storage Card Drivers device 42 and driving circuit 43 are connected to bus 44.
The aperture driving mechanism 36 that lens barrel 30 is carried out to the zoom drive mechanism 31 of zoom drive, the focusing driving mechanism 32 that drives condenser lens 5, the shutter driver 34 that drives shutter 33 and driving aperture 35 is connected to driving circuit 43.
Such as the picture pick-up device such as ccd sensor or cmos sensor 11 and flashlamp 21 are connected to driving circuit 43.Signal based on from CPU46 carrys out the operation of the unit that controlling and driving circuits 43 connects via driving circuit 43.
Various control programs and other program are stored in ROM45, and the needed data of various control program are stored in RAM47.Analogy signal processing unit 37 carries out simulation process to the view data of exporting from picture pick-up device 11, and view data is outputed to A/D converter 38.
The simulated data of obtaining from picture pick-up device 11 is converted into numerical data by A/D converter 38, and numerical data is outputed to digital signal processing unit 39.Digital signal processing unit 39 carries out predetermined process to the numerical data obtaining by the conversion of A/D converter 38, and outputs to storer 40 using obtained data as view data.
The view data of storing in storer 40 is undertaken, such as the compression such as JPEG or TIFF is processed, being then output to and being installed on the storage card of Storage Card Drivers device 42 and being stored by compression/decompression unit 41.
In addition, the view data of storing in the view data of storing in storer 40 and Storage Card Drivers device 42 can be carried out decompression by compression/decompression unit 41, is then shown in display 23 via bus 44.
Below with reference to Fig. 4 to Fig. 6, describe lens barrel 30 in detail.
Fig. 4 illustrates the sectional view of lens barrel 30 in wide-angle position, and Fig. 5 illustrates the sectional view of lens barrel 30 in the position of dolly-out,ing dolly-back, and Fig. 6 illustrates that first lens unit 1, the second lens unit 2 and first directly enter the exploded perspective view of the relation between cylinder 7.
As shown in Figure 4 and Figure 5, lens barrel 30 has the 3rd lens unit 3 that keeps the first lens unit 1 of first group of lens, the second lens unit 2 that keeps second group of lens and the 3rd group of lens of maintenance.
In addition, lens barrel 30 has the 4th lens unit 4 that keeps the 4th group of lens and the 5th lens unit 5 that keeps the 5th group of lens.The 5th group of lens of the 5th lens unit 5 are condenser lenses.
Device keeper 12 keeps picture pick-up device 11, and stationary cam cylinder 10 is disposed in the object side of device keeper 12.
Stationary cam groove 10a is formed on the interior perimembranous of stationary cam cylinder 10, and the second translating cam cylinder 8 follow stationary cam groove 10a from untie-sell and stationary cam groove 10a cam engagement.The second translating cam cylinder 8 is driven in rotating mode, makes follow stationary cam groove 10a and move at optical axis direction in rotating with respect to stationary cam cylinder 10 from untie-sell from untie-sell.
Second directly enters the interior perimembranous that cylinder 9 is arranged in the second translating cam cylinder 8, and second directly enters cylinder 9 and be attached to the second translating cam cylinder 8 and second in the mode that can rotate with respect to the second translating cam cylinder 8 by bayonet type and directly enter cylinder 9 and on optical axis direction, move together with the second translating cam cylinder 8.Be formed in the second peripheral part that directly enters cylinder 9 with the key-way shape that key 10b is combined directly entered of the interior perimembranous that is arranged at stationary cam cylinder 10, limit thus the second rotation of directly entering cylinder 9.
The first cam path 8a is formed at the interior perimembranous of the second translating cam cylinder 8, and first directly enter cylinder 7 from untie-sell and the first cam path 8a cam engagement.
The first translating cam cylinder 6 is arranged in first and directly enters cylinder 7 outer circumferential side, and the first translating cam cylinder 6 is attached to first in rotating mode by bayonet type and directly enters cylinder 7.First directly enter cylinder 7 have be arranged at second directly enter cylinder 9 directly enter the keyway that bond is closed, thus, directly enter in 7 state that are limited to rotate first, first directly enters cylinder 7 owing to can moving with respect to the second translating cam cylinder 8 on optical axis direction with the cam engagement of the second translating cam cylinder 8.
The first translating cam cylinder 6 is attached to the second translating cam cylinder 8 by key formula, and the first translating cam cylinder 6 directly enters together with cylinder 7 and moves on optical axis direction with first in the rotation along with the second translating cam cylinder 8 and in rotating.Cam path is formed at the interior perimembranous of the first translating cam cylinder 6, and first lens unit 1 follow this cam path from untie-sell and this cam path cam engagement.
Thus, the rotation of the first translating cam cylinder 6 is moved first lens unit 1 on optical axis direction.In the time that first lens unit 1 moves on optical axis direction, because being attached to first by key formula, first lens unit 1 directly enters cylinder 7, therefore limit the rotation of first lens unit 1.Here, the first translating cam cylinder 6 is corresponding to exemplary the first cam member according to the present invention.
Cam ring cylinder 13 is disposed in the inner circumferential side of the second translating cam cylinder 8, and interiorly directly enters the inner circumferential side that cylinder 14 is disposed in cam ring cylinder 13.
Inside directly enter cylinder 14 and be attached to cam ring cylinder 13 in rotating mode by bayonet type.The second cam path 8b is formed on the interior perimembranous of the second translating cam cylinder 8, and interior directly enter cylinder 14 follow the second cam path 8b from untie-sell and the second cam path 8b cam engagement.
Inside directly entering cylinder 14 has and is arranged at second and directly enters cylinder 9 the keyway that directly enters keyed engagement, result, directly enter in 14 state that are limited to rotate interior, inside directly enter cylinder 14 owing to can moving with respect to the second translating cam cylinder 8 with the cam engagement of the second translating cam cylinder 8 on optical axis direction.
Cam ring cylinder 13 is attached to the second translating cam cylinder 8 by key formula, and cam ring cylinder 13 in the rotation along with the second translating cam cylinder 8 and in rotating with interior directly enter together with cylinder 14 on optical axis direction, move.In addition, the cam path of following from untie-sell 2a of the second lens unit 2 is formed on the peripheral part of cam ring cylinder 13, and the 3rd lens unit 3 and the 4th lens unit 4 cam path of following from untie-sell are separately formed at the interior perimembranous of cam ring cylinder 13.
Thus, the rotation of cam ring cylinder 13 is moved the second lens unit 2, the 3rd lens unit 3 and the 4th lens unit 4 on optical axis direction.Thereby the 3rd lens unit 3 and the 4th lens unit 4 by key formula be attached to interior directly enter cylinder 14 be limited rotate.Here, cam ring cylinder 13 is corresponding to exemplary the second cam member according to the present invention.
In the time that the wide-angle position of lens barrel 30 from Fig. 4 stretches out to the position of dolly-out,ing dolly-back in Fig. 5, the second lens unit 2 with first lens unit 1 relatively away from side move up.
Now, the rate of travel on optical axis direction is large especially compared with other lens unit with respect to first lens unit 1 for the second lens unit 2.
Here, with reference to figure 6, wide-angle position in Fig. 4, the groove 2b that directly enters that is arranged at the peripheral part of the second lens unit 2 engages with the first guide protrusion 1a of the interior perimembranous that is arranged at first lens unit 1, thereby directly enters to guide the second lens unit 2 in the rotation of restriction the second lens unit 2.
In addition, the position of dolly-out,ing dolly-back in Fig. 5, is arranged at directly the entering groove 2b and be arranged at the first the second guide protrusion 7a that directly enters cylinder 7 interior perimembranous and engage of peripheral part of the second lens unit 2.Here, directly enter groove 2b and the first guide protrusion 1a corresponding to directly entering guidance unit according to of the present invention exemplary first, directly enter groove 2b and the second guide protrusion 7a corresponding to directly entering guidance unit according to of the present invention exemplary second.
Wide-angle position at lens barrel 30 from Fig. 4 reaches dolly-out,ing dolly-back when position in Fig. 5, directly enters groove 2b and is switched to from the state engaging with the first guide protrusion 1a the state engaging with the second guide protrusion 7a.
As a result, can increase first lens unit 1 and the relatively move interval of the second lens unit 2 on optical axis direction, and not increase the first size of directly entering on cylinder 7 optical axis direction that restriction the second lens unit 2 rotates.
As mentioned above, in the present embodiment, can increase the stroke of the second lens unit 2, and not increase the first size of directly entering on cylinder 7 optical axis direction.As a result, the shooting multiplying power of lens barrel 30 can be increased, the slimming of digital camera 15 can be realized by reducing lens barrel 30 size on optical axis direction in the time retracting simultaneously.
other embodiment
Aspect of the present invention can also be realized by the computing machine of following system or equipment (or such as device such as CPU or MPU) and following method: the computing machine of described system or equipment reads and carry out the program that is recorded in memory storage to carry out the function of above-mentioned embodiment, and the step of described method is carried out with the function of carrying out above-mentioned embodiment by for example reading and carry out the program that is recorded in memory storage by the computing machine of described system or equipment.For this reason, for example, via network or from for example, providing program as various types of recording mediums (, computer-readable medium) of memory storage for computing machine.
Although reference example embodiment has been described the present invention, it should be understood that, the present invention is not limited to disclosed illustrative embodiments.The scope of appending claims should meet the most wide in range explaination, to contain all such modification, equivalent structure and functions.
The application requires the right of priority of the Japanese patent application NO.2011-021613 submitting on February 3rd, 2011, and the full content of this Japanese patent application is contained in this by reference.
Claims (3)
1. a lens barrel, it comprises:
First lens unit, it is constructed to keep first group of lens;
The second lens unit, it is constructed to keep second group of lens;
The first cam member, described first lens unit and described the first cam member cam engagement, and described the first cam member is constructed to rotate so that described first lens unit moves on optical axis direction;
The second cam member, described the second lens unit and described the second cam member cam engagement, and described the second cam member is constructed to rotate so that described the second lens unit moves on optical axis direction; With
Directly enter cylinder, it is constructed to limit the rotation of described first lens unit,
Described lens barrel is characterised in that, it also comprises:
First directly enters guidance unit, it is constructed to be arranged between described first lens unit and described the second lens unit, and described first directly enters guidance unit and be constructed under the confined state of rotation of described the second lens unit, directly enter to guide on optical axis direction described the second lens unit; With
Second directly enters guidance unit, it is constructed to be arranged on described the second lens unit and describedly directly enters between cylinder, and described second directly enters guidance unit is constructed under the confined state of rotation of described the second lens unit, directly enter to guide on optical axis direction described the second lens unit
Wherein, when described the second lens unit with described first lens unit relatively away from side while moving up, the movement of described the second lens unit is directly entered guiding and is switched to directly to be entered guidance unit by described second and directly enter guiding from directly being entered guidance unit by described first.
2. lens barrel according to claim 1, is characterized in that,
Described first directly enters guidance unit comprises: the first guide protrusion, and it is arranged on the interior perimembranous of described first lens unit; Directly enter groove, its peripheral part that is arranged on described the second lens unit to be engaging with described the first guide protrusion,
Described second directly enters guidance unit comprises: describedly directly enter groove; With the second guide protrusion, it is arranged on and describedly directly enters the interior perimembranous of cylinder and can directly enter groove and engage with described.
3. a picture pick-up device, it has by move the lens barrel that changes the zoom type of taking multiplying power on optical axis direction between camera site and retracted position, and the lens barrel of described zoom type is lens barrel claimed in claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011021613A JP5765957B2 (en) | 2011-02-03 | 2011-02-03 | Lens barrel and imaging device |
| JP2011-021613 | 2011-09-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102628979A CN102628979A (en) | 2012-08-08 |
| CN102628979B true CN102628979B (en) | 2014-09-03 |
Family
ID=46587268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210025772.1A Expired - Fee Related CN102628979B (en) | 2011-02-03 | 2012-02-02 | Zoom type lens barrel and image pickup apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US8625205B2 (en) |
| JP (1) | JP5765957B2 (en) |
| CN (1) | CN102628979B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5637777B2 (en) * | 2010-08-19 | 2014-12-10 | キヤノン株式会社 | Zoom lens barrel |
| JP6214379B2 (en) * | 2013-12-17 | 2017-10-18 | キヤノン株式会社 | Optical equipment |
| JP2017107127A (en) * | 2015-12-11 | 2017-06-15 | キヤノン株式会社 | Lens barrel, optical instrument, and imaging device |
| JP7080652B2 (en) * | 2018-01-30 | 2022-06-06 | キヤノン株式会社 | Lens barrel and optical equipment |
| JP7013263B2 (en) * | 2018-01-30 | 2022-01-31 | キヤノン株式会社 | Lens barrel and optical equipment |
| JP7059037B2 (en) * | 2018-02-16 | 2022-04-25 | キヤノン株式会社 | Lens barrel and image pickup device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822153A (en) * | 1985-12-02 | 1989-04-18 | Asahi Kogaku Kogyo Kabushiki Kaisha | One-hand zoom lens barrel |
| CN1542485A (en) * | 2003-02-26 | 2004-11-03 | 佳能株式会社 | Lens apparatus and image-taking apparatus |
| CN101620310A (en) * | 2008-07-02 | 2010-01-06 | 佳能株式会社 | Lens barrel and image pickup apparatus |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090947A (en) * | 2001-09-18 | 2003-03-28 | Olympus Optical Co Ltd | Zoom lens barrel |
| US6829103B2 (en) * | 2002-09-26 | 2004-12-07 | Pentax Corporation | Lens barrel |
| JP4497907B2 (en) * | 2003-12-12 | 2010-07-07 | キヤノン株式会社 | Lens device and camera |
| JP2006078537A (en) | 2004-09-07 | 2006-03-23 | Konica Minolta Opto Inc | Zoom lens barrel and its manufacturing method |
| JP2006220795A (en) * | 2005-02-09 | 2006-08-24 | Fujinon Corp | Zoom lens device |
| JP4645274B2 (en) * | 2005-04-08 | 2011-03-09 | ソニー株式会社 | LENS DEVICE AND IMAGING DEVICE |
| JP2007114531A (en) | 2005-10-20 | 2007-05-10 | Sony Corp | Cam mechanism of lens barrel |
| JP4974961B2 (en) * | 2008-05-01 | 2012-07-11 | キヤノン株式会社 | Lens barrel |
| JP5015201B2 (en) * | 2009-06-26 | 2012-08-29 | Ｈｏｙａ株式会社 | Lens barrel linear guide mechanism |
-
2011
- 2011-02-03 JP JP2011021613A patent/JP5765957B2/en not_active Expired - Fee Related
-
2012
- 2012-02-02 US US13/364,692 patent/US8625205B2/en not_active Expired - Fee Related
- 2012-02-02 CN CN201210025772.1A patent/CN102628979B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822153A (en) * | 1985-12-02 | 1989-04-18 | Asahi Kogaku Kogyo Kabushiki Kaisha | One-hand zoom lens barrel |
| CN1542485A (en) * | 2003-02-26 | 2004-11-03 | 佳能株式会社 | Lens apparatus and image-taking apparatus |
| CN101620310A (en) * | 2008-07-02 | 2010-01-06 | 佳能株式会社 | Lens barrel and image pickup apparatus |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2006-220795A 2006.08.24 |
| JP特开2006-292959A 2006.10.26 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102628979A (en) | 2012-08-08 |
| US8625205B2 (en) | 2014-01-07 |
| JP5765957B2 (en) | 2015-08-19 |
| US20120200941A1 (en) | 2012-08-09 |
| JP2012163605A (en) | 2012-08-30 |
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Granted publication date: 20140903 Termination date: 20210202 |